Lead oxide-free glass, particularly for use in electric lamps

Details Lead oxide-free glass, particularly for use in electric lamps Lead oxide-free glass, particularly for use in electric lamps

1991-06-10

1993-01-19

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 69, 501 64, 313636, C03C 3091

Patent

active

051806959

ABSTRACT:
A lead oxide free glass of high electrical resistance, easy workability, that is, low abrasive characteristics, and a thermal coefficient of expansion compatible with electrical current supply leads, has an electrical resistance of 10.sup.12 ohm cm at 250.degree. C., and, basically, the following composition:

REFERENCES:
patent: 4089694 (1978-05-01), Thomas et al.
patent: 4105826 (1978-08-01), Thomas
patent: 4354139 (1982-10-01), Konijnendijk et al.
patent: 4441051 (1984-04-01), Thomas
patent: 4459510 (1984-07-01), Joormann
patent: 4666871 (1987-05-01), Spierings et al.
patent: 4737685 (1988-04-01), Thomas
Chemical Abstracts vol. 111, No. 16, Oct. 16, 1989, Columbus, Ohio Abstract o. 139426X, p. 327.
Chemical Abstracts vol. 95, No. 5, Sep. 1981, Columbus, Ohio No. 85052C, p. 252.
Chemical Abstracts vol. 83, No. 20; Nov. 17, 1976, Columbus, Ohio No. 167943K, p. 237.

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